Please share your dashboard.min.js content and explain what css formatting is not working.

 <label class="form-label">Product ID</label>

 <label class="form-label">Product ID</label>

I can't understand your issue.

Will you please explain in details?

I am using Bootstrap and some javascript stored in js file for theme. the theme is working fine unless i postback the updatepanel the theme that require javascript is not working as the whole page is not loaded on updatepanel postback. How I use js file on updatepanel reload that all the javascripts work stored in js file thanks in anticipation

Hi sameesultani7...,

Specify BODY as the parent element. Refer below article for details.

jQuery event handler inside AJAX UpdatePanel not working after Partial PostBack in ASP.Net

Refer below example.

Script File

$(function () {
    $('body').on('change', '[id*=txtProductCode]', function () {
        alert($(this).val());
    });
});

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css" />
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="dashboard.js"></script>
<asp:ScriptManager runat="server" />
<asp:UpdatePanel runat="server">
    <ContentTemplate>
        <div class="container">
            <div class="row">
                <div class="col-md-6">
                    <asp:TextBox ID="txtProductCode" runat="server" CssClass="form-control"></asp:TextBox>
                    <br />
                </div>
                <div class="col-md-6">
                    <asp:Button Text="Submit" runat="server" CssClass="btn btn-primary" OnClick="OnSubmit" />
                </div>
            </div>
        </div>
    </ContentTemplate>
</asp:UpdatePanel>

Code

C#

protected void OnSubmit(object sender, EventArgs e)
{
    ScriptManager.RegisterStartupScript((sender as Control), this.GetType(), "alert", "alert('" + txtProductCode.Text.Trim() + "');", true);
}

VB.Net

Protected Sub OnSubmit(ByVal sender As Object, ByVal e As EventArgs)
    ScriptManager.RegisterStartupScript(TryCast(sender, Control), Me.GetType(), "alert", "alert('" & txtProductCode.Text.Trim() & "');", True)
End Sub

Screenshot